Made of Glass they are Dishwasher safe, free and . Great for hot or cold beverages and the environment. A stir stick and make a great drink identifier. Also fits the new free sip lids that are rust free for togo cups. Length: 18cm / 7.08 inch Diameter: 8mm with 5 mm inner diameter Material: Glass Color: Transparent DISCLAIMER: These glass borosilicate drinking straws are very durable but are to be used like any drinking glass with caution. They can be damaged chipped and or broken with use and should be checked each time before use and discarded if damaged. Although not intended for children if used by children they should be supervised by an adult at all times. The straws pot and any of employees or anyone having to do with the manufacturing of these straws are not responsible for any injury or personal property damage due to use of these straws. Package Included:1 x Glass Drinking Straw (Not included Glass Cup) Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.